如何修改列的默认值T-SQL
没有办法直接通过脚本修改列的默认值。只能先删除原来默认值的约束,再重新添加默认值的约束
SELECT d.definition d.name,* FROM sys.default_constraints AS d INNER JOIN sys.columns AS c ON d.parent_column_id = c.column_id WHERE d.parent_object_id = OBJECT_ID(N'table name', N'U') AND c.name = 'column name'; ---- alter table [table name] drop constraint [上面d.name] go alter table [table name] add constraint 约束的名字 default 1 for column Name go exec sp_helpconstraint [table name]